Understanding Quadrilaterals MCQ Questions for Class 8 Math’s Chapter 3 with Answers

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All questions answers in the last paragraph

Q1. In the quadrilateral ABCD, the diagonals AC and BD are equal and perpendicular to each other. What type of a quadrilateral is ABCD?

(A) A square
(B) A parallelogram
(C) A rhombus
(D)A trapezium

Q2. If ABCD is an isosceles trapezium, what is the measure of ∠C?

(A) ∠B
(B) ∠A
(C) ∠D

Q3. The angle sum of a convex polygon with number of sides 10 is

(a ) 720°
(B) 900°
(C) 1080°

Q4. What is the number of vertices of a triangle ?

(A) 1
(B) 2
(C) 3

Q5. Which of the parallelograms has all sides equal and diagonals bisect each other at right angle?

(A) square
(B) rectangle
(C) rhombus

Q6. The perimeter of a parallelogram whose parallel sides have lengths equal to 12 cm and 7cm is:

(A) 21cm
(B) 42 cm
(C) 19 cm
(D)38 cm

Q7. In a parallelogram ∠A : ∠B = 1 : 2 then ∠1 is

(A) 90°
(B) 45
(C) 60°

Q8. What is the name of a regular polygon of 6 sides

(A) Square
(B) Equilateral triangle
(C) Regular hexagon
(D)Regular Octagon

Q9. If AB and CD are two parallel sides of a parallelogram, then:

(D)None of the above

Q10. Which of the following quadilaterals has two pairs of adjacent sides equal and diagonals intersecting at right angles?

(A) square
(B) rhombus
(C) kite

Q11. The angle sum of a convex polygon with number of sides 7 is

(A) 900°
(B) 1080°
(C) 1440°

Q12. State the name of a regular polygon of 6 sides.

(A) pentagon
(B) hexagon
(C) heptagon
(D)none of these

Q13. ABCD is a parallelogram. The angle bisectors of ∠A and ∠D meet at O. What is the measure of ∠AOD?

(A) 45°
(B) 90°
(C) 75°

Q14. If ∠A and ∠B are two adjacent angles of a parallelogram. If ∠A = 70°, then ∠B = ?

(A) 70°
(B) 90°
(C) 110°

Q15. The sum of the measures of all the three angles of a triangle is

la) 90°
(B) 180°
(C) 360°

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